You searched for: Protein Extraction

Supplier: G-Biosciences

InGel™ provides a reliable method for the proteolytic digestion and subsequent extration of silver stained proteins in gel for subsequent analysis by mass spectrometry.

Supplier: G-Biosciences

Lipid rafts are membrane microdomains that are enriched in caveolin, cholesterol, glycolipids, sphingolipids and glycosyl-phosphatidylinositol. Lipid rafts are also known as detergent-insoluble glycolipid-enriched complexes (GEMs) or DIGs. Many signalling proteins, including glycosylphosphatidylinositol (GPI)-anchored proteins, doubly-acylated tyrosine kinases of the Src family, and transmembrane proteins, are located in lipid rafts. Lipid raft localised proteins have been shown to be involved in intracellular membrane trafficking and signalling.

Supplier: G-Biosciences

Protein-S-S-Reductant™ uses TCEP (Tris [2-carboxyethyl] phosphine), a popular alternative to β-mercaptoethanol and DTT (dithiothreitol). TCEP improves stability, increases effectiveness, and reduces proteins over a wider range of pH, including lower acidic pHs. Protein-S-S-Reductant™ completely reduces stable disulfide bonds in less than 5 minutes at room temperature and is compatible with the protein alkylation reactions. This ready to use solution is at a neutral pH and stabilised for long-term storage. Simply supplement Protein-S-S-Reductant™ in place of DTT or β-mercaptoethanol and boil the sample.

Supplier: G-Biosciences

Antibody Fab and F(ab)₂ Fragmentation of Mouse IgG₁ Kits are designed for the generation and isolation of Fab and F(ab)₂ fragments from mouse IgG₁ molecules. The kit utilises Immobilised Ficin resin. Ficin (or Ficain) (~25000 Da) is a cysteine protease enzyme (EC 3.4.22.3) isolated from fig latex that has the endopeptidase activity to cleave immunoglobulin G molecules in the hinge region. Ficin has an effective range of pH 4 to 9,5 with an optimal pH of 6,5 and cleaves bonds that involve uncharged or aromatic amino acids. Ficin is typically used to cleave mouse IgG₁ as this is difficult to cleave with papain and pepsin. In the presence of 1 to 4 mM or 10 to 20 mM cysteine, ficin generates F(ab)₂ and Fab fragments respectively.

Supplier: G-Biosciences

FOCUS™ Global Fractionation kit is designed to fractionate complex biological samples into cytosolic and membrane fractions. The resulting membrane fractions are subsequently fractionated into either peripheral and integral membrane proteins or lipid raft associated proteins and detergent soluble membrane proteins.

Supplier: Thermo Fisher Scientific

Pierce™ TMTzero™ Label Reagent serves as a "light" tag for MS-level peptide quantitation similar to duplex isotopic metabolic labeling, such as SILAC, or isotopic dimethylation labeling.

Supplier: Thermo Fisher Scientific

The Pierce™ Mouse Embryonic Fibroblast (MEF) Isolation Kit enables high yield isolation and culture of viable primary fibroblasts from mouse embryos.

Supplier: Enzo Life Sciences

FLUOR DE LYS® Developer is an essential reagent for signal generation in HDAC or sirtuin assays done with the FLUOR DE LYS® substrate. An appropriate FLUOR DE LYS® family substrate, comprising an acetylated lysine side chain, is first incubated with a sample containing HDAC activity (nuclear or cellular extract, purified enzyme, bead-bound immunocomplex, etc.). Deacetylation of the substrate sensitizes it so that, in a second step, treatment with the FLUOR DE LYS® Developer produces a fluorophore. Typically, an ‘inhibitor stop’ will be included in the 1x Developer dilution (e.g. Trichostatin A) for class I and II HDACs, nicotinamide for sirtuins).

Supplier: Enzo Life Sciences

Rapid, reliable method to isolate nuclear proteins in mammalian cells and tissues.

Supplier: G-Biosciences

A reagent kit for detection and estimation of SDS in a sample. Mix the test sample in the extraction buffer reagents provided with the kit. If SDS is present in the sample, a blue colour is extracted that can be quantitatively measured.

Supplier: Thermo Fisher Scientific

Endoproteinase Lys-C protease is a highly purified native endoproteinase validated for maximum activity and stability in proteomic applications.

Supplier: G-Biosciences

OrgoSol DetergentOUT™ is suitable for removal of detergents from protein solutions, including hydrophobic protein solutions. Compatible with all detergent types, its performance is not dependent on the concentration of detergents in the solution. It is highly flexible and can be used to process small and large sample volumes.

Supplier: G-Biosciences

FOCUS™ PhosphoRich™ is a ready-to-use kit that enriches phosphorylated proteins and phosphopeptides from complex biological samples. The kit contains spin columns that have a phosphoprotein binding resin with a binding capacity of ~20 mg phosphorylated ovalbumin per column. The resin columns supplied with the kit can be reused, if regenerated and stored properly. FOCUS™ PhosphoRich™ is suitable for 2D gel electrophoresis and for proteomics and cell signalling studies.

Supplier: G-Biosciences

Antibody Fab Fragmentation Kits are designed for the generation and isolation of Fab fragments from IgG molecules. The kits utilise Immobilised Papain resin. Immobilised Papain offers the advantage of generating Fab and fragments without the need to remove the papain enzyme after digestion. Following papain digestion the Fab fragments are separated from undigested IgG and the Fc region with the supplied Protein A Spin Column. Protein A Resin binds the IgG and Fc molecules and the Fab are rapidly collected.

Supplier: Biotium

AccuOrange™ Protein Quantitation Kit is a highly sensitive fluorescence-based assay for quantitating purified protein samples in 96-well format (excitation/emission = 480/598 nm).

Supplier: G-Biosciences

The F(ab)₂ Fragmentation kits are designed for the generation and isolation of F(ab)₂ fragments from IgG molecules. The kit utilises Immobilised Pepsin resin. Pepsin is a proteolytic enzyme that is routinely used for the generation of F(ab)₂ fragments from immunoglobulin G (IgG). One or more of the disulfide bonds that join the heavy chains in the hinge region are preserved, so the two Fab regions of the antibody remain joined together, yielding a divalent molecule (containing two antibody binding sites), hence the designation F(ab)₂. The light chains remain intact and attached to the heavy chain, whereas the Fc fragment is digested into small peptides. The Immobilised Pepsin offers the distinct advantage of eliminating enzyme contamination of the F(ab)₂ fragments.

Supplier: Thermo Fisher Scientific

The Pierce™ Universal Nuclease for Cell Lysis is ideal for a wide variety of applications where complete digestion of nucleic acids is needed when preparing cell lysates.

Supplier: Enzo Life Sciences

FLUOR DE LYS® Developer II is an essential reagent for signal generation in assays done with the FLUOR DE LYS®-HDAC8, FLUOR DE LYS®-SIRT1 and FLUOR DE LYS®-SIRT2 substrates. Deacetylation of the FLUOR DE LYS® substrate sensitises it so that, in a second step, treatment with the FLUOR DE LYS® Developer II produces a fluorophore. Typically, an ‘inhibitor stop’ will be included in the 1X Developer dilution (e.g. nicotinamide for sirtuins).

Supplier: Thermo Fisher Scientific

Glu-C protease is a highly specific endoproteinase use to improve sequence coverage in mass spectrometry protein identification applications.

Supplier: Thermo Fisher Scientific

Asp-N protease is a highly specific endoproteinase used to improve sequence coverage in mass spectrometry protein identification applications.

Supplier: Thermo Fisher Scientific

Chymotrypsin protease is a purified native endoproteinase validated for maximum activity and selectivity in proteomic applications.

Supplier: G-Biosciences

Samples that contain a large abundance of albumin, such as plasma and cerebrospinal fluid, tend to mask identification and discovery of other less abundant proteins in two dimensional gel electrophoresis and other studies. AlbuminOUT™ has been specifically developed for substantial removal of albumin from such samples.

Supplier: G-Biosciences

FOCUS™ Mitochondria kit is specifically designed for the isolation of intact mitochondria from cultured mammalian cells. This kit allows for the fast and efficient fractionation of the cytoplasm of cultured mammalian cells into an enriched fraction of mitochondria. The majority (>90%) of the mitochondria have intact inner and outer membranes and therefore retain their functionality.

Supplier: G-Biosciences

Immobilised Iminobiotin Resin consists of iminobiotin, a cyclic guanido analog of biotin, covalently coupled to 6% crosslinked agarose. The resin allows for the purification of avidin, streptavidin and Neutravidin and their subsequent gentle elution using non denaturing elution buffers.

Supplier: Thermo Fisher Scientific

Surfact-Amps™ detergents are ready-to-use, diluted solutions of purified detergent that can be used in routine and high-demand protein research methods and molecular biology techniques. These detergents are useful as a component of cell lysis buffers or other solutions intended to extract and solubilise proteins, improve chromatography, prepare yeast spheroplasts, and reduce background in ELISA or Western blot methods.

Supplier: Thermo Fisher Scientific

Detoxi-Gel™ endotoxin removing columns and gel uses polymixin B ligand immobilised on beaded affinity resin to bind and extract endotoxins from antibody or protein samples.

Supplier: G-Biosciences

FOCUS™ Cytoplasmic and Nuclear Protein Fractionation Kit for the fractionation of nuclear and cytoplasmic proteins from cells and tissues.

Supplier: Thermo Fisher Scientific

The glycoprotein isolation kit allows isolation of glycoproteins from complex mixtures, including serum, tissue and cultured cell lysates. The procedure uses concanavilin A (ConA) or wheat germ agglutinin (WGA) as a ligand to bind a specific class of glycoprotein from complex protein samples - those containing alpha-lined mannose or terminal glucose residues (in case of ConA) and N-Acetyl glucosamine (GlcNAc) groups or sialic acid (in case of WGA). This kit has been used to isolate glycoproteins from serum as well as HeLa and CHO cell lysates in approximately 50 minutes.

Supplier: Thermo Fisher Scientific

The In-Solution Tryptic Digestion and Guanidination Kit contains proteomics grade trypsin, buffers and reagents to alkylate and digest proteins and then guanidinate the peptide fragments for mass spectrometry.

Supplier: Thermo Fisher Scientific

The Pierce™ In-Gel Tryptic Digestion Kit provides a complete set of reagents for digesting and recovering peptide fragments from approximately 150 stained protein bands excised from SDS-PAGE (polyacrylamide gel plugs).